Patents by Inventor Chang Hsien-Yang

Chang Hsien-Yang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Toy device which can be opened and positioned at any desired angle
    Patent number: 4681554
    Abstract: A toy device is disclosed which can be opened at any angle desired by means of a mechanical structure, which comprises mainly a fixed member with two notches being furnished at both ends respectively; two movable members, of which the bottom ends are fixed respectively to two transmission members being mounted in the notches on the fixed member; a control member, of which two lugs on both ends thereof are hooked in the two round holes of the two transmission members respectively so as to have the control member coupled with the two movable members. When the control member is being driven to move upwards, the movable members will be moved to open at a given angle or fully open at an angle of 180.degree..
    Type: Grant
    Filed: December 30, 1985
    Date of Patent: July 21, 1987
    Inventor: Chang Hsien-Yang